Laminator with changeable rotation speed and heating temperature

Abstract

The present invention relates to a laminator with changeable rotation speed and heating temperature including a first roller set, a second roller set, a transmission gear set, a speed changing gear set, a first driving device, a second driving device, an input interface, a controller and a heating device. A user selects an option of the input interface according to film thickness. The controller determines rotation speed and heating temperature of the first roller set and the second roller set according to the option. Then the controller controls the second driving device to move the speed changing gear set to alter the engagement between the speed changing gear set and the transmission gear set, as to modulate the rotational speed of the first roller set and the second roller set.

Description

FIELD OF THE INVENTION[0001]The present invention generally relates to a laminator, and more particularly to a laminator with changeable rotation speed and heating temperature.BACKGROUND OF THE INVENTION[0002]A laminator is a kind of common office machines for laminating two films and an object, such as a photo or a business card, disposed between the two films. After the two films and the object disposed between the two films pass through a roller set inside the laminator, the object is sealed between the two films, so as to reduce the probability of the object being damaged and thus increase the storage life of the object. It should be noted that the films provided by different suppliers may have various thicknesses, and the thicker films need more heat energy for laminating during a heat laminating process. Therefore, with the film thicknesses increasing, the laminator needs to reduce a rotational speed of the roller set for increasing a time of the films receiving the heat energ...

AI Technical Summary

Benefits of technology

[0035]In a preferred embodiment, a side edge of each of teeth of the first transmission gear wheel, the second transmission gear wheel, the first speed changing gear wheel and the second speed changing gear wheel further comprises two chamfers, so as to smoothly engage the first speed changing gear wheel and the second speed changing gear wheel with the first transmission gear wheel and the second transmission gear wheel.

Problems solved by technology

The first disadvantage is that the user need to push the adjusting rod leftward or rightward for moving the first transmission gear wheel when the rotational speed of the first roller and the second roller is required to be adjusted.

However, in a long term use, the adjusting rod is probably damaged or even fractured by the external force, and thus the conventional laminator is unable to adjust the rotational speed any more.

Besides, the laminator disclosed in the U.S. Pat. No. 7,556,077 does not have a function of adjusting heating temperature.

Therefore, the laminator is in an environment with a high temperature for a long period during being operated, and thus a probability of melt damage is increased.

In addition, when the thickness of the film required to be laminated is thinner, the user needs to wait for the same heating time as laminating a thicker film, and thus it is quite inconvenient to the user.

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